Hirvijärvi Reservoir — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Hirvijärvi Reservoir, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Hirvijärvi Reservoir today is 3.9°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
❌ As of today, the minimum water temperature ranges less than 41°F (5°C). Such water is extremely cold and not recommended for swimming without proper preparation. In these conditions, the risk of hypothermia is very high, and prolonged exposure to the water can be hazardous to your health. If you decide to swim, it is important to have the appropriate gear, such as a wetsuit. Typically, only experienced swimmers or those who practice winter swimming venture into such waters. It is important to note that these swimming tips and recommendations apply only in good weather. When the air temperature is below 68°F (20°C), and sometimes even below 77°F (25°C), swimming can be unpleasant even with relatively high water temperatures.
Water Temperature Chart Over the Last 30 Days
Table of Daily Sea Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| APR 11 | 1.8°C | 3.0°C | |
| APR 12 | 1.9°C | 3.0°C | |
| APR 13 | 2.0°C | 3.0°C | |
| APR 14 | 2.5°C | 3.0°C | |
| APR 15 | 2.7°C | 3.0°C | |
| APR 16 | 2.9°C | 3.0°C | |
| APR 17 | 3.2°C | 3.0°C | |
| APR 18 | 3.8°C | 3.0°C | |
| APR 19 | 3.0°C | 3.9°C | |
| APR 20 | 3.0°C | 3.8°C | |
| APR 21 | 3.0°C | 3.8°C | |
| APR 22 | 3.0°C | 3.7°C | |
| APR 23 | 3.0°C | 3.7°C | |
| APR 24 | 3.0°C | 3.6°C | |
| APR 25 | 3.0°C | 3.6°C |
* Current - Actual water temperature value
** Average - Average water temperature on this day in recent years
*** Forecast - Our water temperature forecast
Actual nearshore water temperatures may fluctuate by several degrees from the reported values, especially following heavy rainfall or extended periods of strong winds. Certain wind patterns can cause colder, deeper waters to rise and replace the sun-warmed surface water, leading to noticeable variations.
Our forecast is based on a proprietary mathematical model that considers real-time water temperature changes, historical trends, key weather patterns, wind strength and direction, and air temperature specific to each region. Additionally, we incorporate data from other resorts to enhance accuracy.
Monthly Water Temperature Range (Min, Max & Average)
| Month | Min | Avg | Max |
|---|---|---|---|
| January | 0°C | 2°C | 5°C |
| February | 0°C | 2°C | 5°C |
| March | 0°C | 2°C | 5°C |
| April | 0°C | 3°C | 6°C |
| May | 7°C | 12°C | 18°C |
| June | 11°C | 17°C | 22°C |
| July | 14°C | 20°C | 25°C |
| August | 14°C | 20°C | 25°C |
| September | 10°C | 15°C | 21°C |
| October | 4°C | 8°C | 11°C |
| November | 2°C | 6°C | 9°C |
| December | 0°C | 2°C | 5°C |
Hirvijärvi Reservoir: Water Temperature by Location
Hirvijärvi Reservoir: Weather Forecast
April 19
April 20
April 21
April 22
April 23
April 24
Location & Local Information
Hirvijärvi Reservoir, located in South Ostrobothnia in western Finland, is an artificial lake created to regulate water levels and prevent flooding in the surrounding region. It is part of the Lapuanjoki river basin and is surrounded by forests and open countryside. The reservoir’s water temperature follows the general pattern typical of Finnish inland waters. After the ice melts in late April or early May, the surface temperature is around 4–7 °C (39–45 °F). In early summer, it rises gradually to 13–16 °C (55–61 °F), and in July, the warmest month, Hirvijärvi Reservoir usually reaches 18–22 °C (64–72 °F). Shallow sections can occasionally exceed 23 °C (73 °F) on sunny, calm days. By late September, the temperature falls below 10 °C (50 °F), and freezing begins again in November.
Swimming in Hirvijärvi Reservoir is allowed and popular during summer. The water is relatively clean and safe for bathing, especially near the designated swimming areas. The lake’s peaceful setting and easy access to the water make it suitable for both recreation and relaxation. While spring and autumn bring cooler temperatures, summer offers comfortable conditions for swimming and other water-based activities in a calm and natural environment.